Apparatus for forming an internal groove in a molded part

Details Apparatus for forming an internal groove in a molded part Apparatus for forming an internal groove in a molded part

1990-12-27

1992-01-14

Heitbrink, Timothy

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

Mold having movable core or movable pin

249179, 249183, 264318, 2643287, 425DIG58, B29C 4544

Patent

active

050805762

ABSTRACT:
A die apparatus permits the formation of an internal recess in a molded part. The die apparatus includes first and second mold members which are movable between an open and closed position. A core pin assembly includes a first core pin element and a second core pin element supported between the movable mold members for relative movement therewith. A resiliently deformable element is positioned between the first and second core pin elements. The resiliently deformable element is deformably expandable to form an external projection upon relative movement of the mold members to a closed position, and is elastically returnable upon the relative movement of the mold members to an open position.

REFERENCES:
patent: 4958676 (1990-09-01), Kuntz

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